Could be that siClass has nil content. Are you sure you didn't mix the CLX and VCL units in your project (be sure no TsiLang units with Q prefix used in VCL application and vice versa)? In case not, please try to reproduce the situation with sample project and send it to us.

Could be that siClass has nil content. Are you sure you didn't mix the CLX and VCL units in your project (be sure no TsiLang units with Q prefix used in VCL application and vice versa)? In case not, please try to reproduce the situation with sample project and send it to us.